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Power Triple Lock Connector System

TE Connectivity's (TE) Power Triple Lock (PTL) Connector System offers three locking methods and an enhanced design to meet the market demand for improved connector stability and reliability in power and signal applications. An audible 'lock' latch provides confirmation when the cap and plug are mated while the ribs surrounding the latch prevent wires from becoming snagged underneath the latch. Optional Connector Position Assurance (CPA) ensures the PTL Connector System is not accidentally disengaged. The optional Terminal Position Assurance (TPA) feature ensures contacts are fully seated in the housing and provides an added measure against contact backout. Additional features include high temperature housings up to 150°C (302°F) and an upgraded lanceless contact design.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.
Headers & Wire Housings 16-20 AWG PhsBr Rcpt Con Term Reel/3700 1971783-1 TE Connectivity 3,700: $0.076 40,700In Stock 59,200Expected 2/11/2026	Mfr. Part No. 1971783-1 Mouser Part No 571-1971783-1	TE Connectivity	Headers & Wire Housings 16-20 AWG PhsBr Rcpt Con Term Reel/3700 Learn More about TE Connectivity te ptl connectors	Datasheet	40,700In Stock 59,200Expected 2/11/2026	Reel $0.076 $0.075 $0.071 $0.067 $0.063 $0.06	Min.: 3,700 Mult.: 3,700 : 3,700
Headers & Wire Housings 16 20 Awg Receptacle contact 1971783-2 TE Connectivity 3,700: $0.061 74,000In Stock	Mfr. Part No. 1971783-2 Mouser Part No 571-1971783-2	TE Connectivity	Headers & Wire Housings 16 20 Awg Receptacle contact Learn More about TE Connectivity te ptl connectors	Datasheet	74,000In Stock	Reel $0.061 $0.06 $0.058	Min.: 3,700 Mult.: 3,700 : 3,700
Headers & Wire Housings 16-20 AWG Brass Pin Con Term Reel/3700 1971784-1 TE Connectivity / AMP 3,700: $0.06 66,600In Stock	Mfr. Part No. 1971784-1 Mouser Part No 571-1971784-1	TE Connectivity / AMP	Headers & Wire Housings 16-20 AWG Brass Pin Con Term Reel/3700 Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	66,600In Stock	Reel $0.06 $0.057 $0.054 $0.046 $0.042	Min.: 3,700 Mult.: 3,700 : 3,700
Headers & Wire Housings 22 AWG PhosBr Rcpt Contact Terminal 1971785-1 TE Connectivity / AMP 4,400: $0.084 66,000In Stock	Mfr. Part No. 1971785-1 Mouser Part No 571-1971785-1	TE Connectivity / AMP	Headers & Wire Housings 22 AWG PhosBr Rcpt Contact Terminal Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	66,000In Stock	Reel $0.084 $0.078 $0.072	Min.: 4,400 Mult.: 4,400 : 4,400
Headers & Wire Housings CPA 1971789-1 TE Connectivity 1: $0.435 37,310In Stock	Mfr. Part No. 1971789-1 Mouser Part No 571-1971789-1	TE Connectivity	Headers & Wire Housings CPA Learn More about TE Connectivity te ptl connectors	Datasheet	37,310In Stock	$0.435 $0.366 $0.326 $0.29 View $0.258 $0.222 $0.209 $0.207	Min.: 1 Mult.: 1
Power to the Board 2x4 plug housing lgr Key A 5-1971776-4 TE Connectivity 1: $1.58 3,428In Stock	Mfr. Part No. 5-1971776-4 Mouser Part No 571-5-1971776-4	TE Connectivity	Power to the Board 2x4 plug housing lgr Key A Learn More about TE Connectivity te ptl connectors	Datasheet	3,428In Stock	$1.58 $1.34 $1.19 $1.14 View $1.06 $0.888 $0.86 $0.831	Min.: 1 Mult.: 1
Heavy Duty Power Connectors PTL MFBL 1X3 PLUG HOUSING 5-2232362-3 TE Connectivity / AMP 1: $0.626 8,248In Stock 1,000Expected 11/11/2026	Mfr. Part No. 5-2232362-3 Mouser Part No 571-5-2232362-3	TE Connectivity / AMP	Heavy Duty Power Connectors PTL MFBL 1X3 PLUG HOUSING Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	8,248In Stock 1,000Expected 11/11/2026	$0.626 $0.529 $0.473 $0.45 View $0.403 $0.382 $0.354 $0.343 $0.333	Min.: 1 Mult.: 1
Power to the Board 1 x 2 PBT-A Cap Hsg Panel Mount 1-1971772-2 TE Connectivity / AMP 1: $1.03 4,378In Stock	Mfr. Part No. 1-1971772-2 Mouser Part No 571-1-1971772-2	TE Connectivity / AMP	Power to the Board 1 x 2 PBT-A Cap Hsg Panel Mount Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	4,378In Stock	$1.03 $0.883 $0.763 $0.715 View $0.65 $0.554 $0.551 $0.536 $0.506	Min.: 1 Mult.: 1
Power to the Board 1 x 3 PBT-A Cap Hsg Panel Mount 1-1971772-3 TE Connectivity / AMP 1: $1.06 17,351In Stock	Mfr. Part No. 1-1971772-3 Mouser Part No 571-1-1971772-3	TE Connectivity / AMP	Power to the Board 1 x 3 PBT-A Cap Hsg Panel Mount Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	17,351In Stock	$1.06 $0.903 $0.806 $0.74 View $0.657 $0.577 $0.567 $0.562	Min.: 1 Mult.: 1
Power to the Board 1 x 4 PBT-A Cap Hsg Panel Mount 1-1971772-4 TE Connectivity / AMP 1: $0.993 7,223In Stock	Mfr. Part No. 1-1971772-4 Mouser Part No 571-1-1971772-4	TE Connectivity / AMP	Power to the Board 1 x 4 PBT-A Cap Hsg Panel Mount Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	7,223In Stock	$0.993 $0.84 $0.751 $0.687 View $0.635 $0.589 $0.563 $0.556 $0.537	Min.: 1 Mult.: 1
Power to the Board 1 x 2 PBT-A Plug Hsg 1-1971773-2 TE Connectivity / AMP 1: $0.87 15,533In Stock	Mfr. Part No. 1-1971773-2 Mouser Part No 571-1-1971773-2	TE Connectivity / AMP	Power to the Board 1 x 2 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	15,533In Stock	$0.87 $0.713 $0.664 $0.605 View $0.521 $0.481 $0.456 $0.446 $0.434	Min.: 1 Mult.: 1
Power to the Board 1 x 3 PBT-A Plug Hsg 1-1971773-3 TE Connectivity / AMP 1: $0.898 10,544In Stock	Mfr. Part No. 1-1971773-3 Mouser Part No 571-1-1971773-3	TE Connectivity / AMP	Power to the Board 1 x 3 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	10,544In Stock	$0.898 $0.759 $0.677 $0.645 View $0.573 $0.517 $0.475 $0.465	Min.: 1 Mult.: 1
Power to the Board 1 x 4 PBT-A Plug Hsg 1-1971773-4 TE Connectivity / AMP 1: $0.884 15,165In Stock	Mfr. Part No. 1-1971773-4 Mouser Part No 571-1-1971773-4	TE Connectivity / AMP	Power to the Board 1 x 4 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	15,165In Stock	$0.884 $0.767 $0.685 $0.653 View $0.582 $0.528 $0.502 $0.498 $0.49	Min.: 1 Mult.: 1
Automotive Connectors 2 X 3 150C BLK TPA-Locking Plate 1971778-3 TE Connectivity / AMP 1: $0.394 13,021In Stock	Mfr. Part No. 1971778-3 Mouser Part No 571-1971778-3	TE Connectivity / AMP	Automotive Connectors 2 X 3 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	13,021In Stock	$0.394 $0.33 $0.301 $0.284 View $0.261 $0.222 $0.211 $0.209 $0.203	Min.: 1 Mult.: 1
Automotive Connectors 2 X 4 150C BLK TPA-Locking Plate 1971778-4 TE Connectivity / AMP 1: $0.462 17,752In Stock	Mfr. Part No. 1971778-4 Mouser Part No 571-1971778-4	TE Connectivity / AMP	Automotive Connectors 2 X 4 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	17,752In Stock	$0.462 $0.392 $0.35 $0.321 View $0.298 $0.271 $0.248 $0.239	Min.: 1 Mult.: 1
Headers & Wire Housings 12 Awg Tab contact 1971780-2 TE Connectivity / AMP 1: $0.258 27,116In Stock 30,000Expected 11/11/2026	Mfr. Part No. 1971780-2 Mouser Part No 571-1971780-2	TE Connectivity / AMP	Headers & Wire Housings 12 Awg Tab contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	27,116In Stock 30,000Expected 11/11/2026	Cut Tape $0.258 $0.219 $0.196 $0.186 Reel $0.136 View $0.166 $0.152 $0.133 $0.126	Min.: 1 Mult.: 1 : 2,500
Power to the Board 1x2 cap housing lgr free hanging Key A 5-1971772-2 TE Connectivity 1: $1.09 10,316In Stock	Mfr. Part No. 5-1971772-2 Mouser Part No 571-5-1971772-2	TE Connectivity	Power to the Board 1x2 cap housing lgr free hanging Key A Learn More about TE Connectivity te ptl connectors	Datasheet	10,316In Stock	$1.09 $0.929 $0.83 $0.752 View $0.695 $0.67 $0.607 $0.59 $0.558	Min.: 1 Mult.: 1
Power to the Board 1x3 cap housing lgr free hanging Key A 5-1971772-3 TE Connectivity 1: $1.16 21,671In Stock	Mfr. Part No. 5-1971772-3 Mouser Part No 571-5-1971772-3	TE Connectivity	Power to the Board 1x3 cap housing lgr free hanging Key A Learn More about TE Connectivity te ptl connectors	Datasheet	21,671In Stock	$1.16 $0.985 $0.879 $0.797 View $0.759 $0.737 $0.688 $0.654 $0.63	Min.: 1 Mult.: 1
Power to the Board 1x3 plug housing dgr Key A 5-2232265-3 TE Connectivity 1: $0.83 16,969In Stock	Mfr. Part No. 5-2232265-3 Mouser Part No 571-5-2232265-3	TE Connectivity	Power to the Board 1x3 plug housing dgr Key A Learn More about TE Connectivity te ptl connectors	Datasheet	16,969In Stock	$0.83 $0.737 $0.687 $0.665 View $0.598 $0.567 $0.539 $0.528 $0.522	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 4 150C BLK TPA-Locking Plate 1971777-4 TE Connectivity / AMP 1: $0.435 6,382In Stock	Mfr. Part No. 1971777-4 Mouser Part No 571-1971777-4	TE Connectivity / AMP	Headers & Wire Housings 1 X 4 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	6,382In Stock	$0.435 $0.373 $0.321 $0.299 View $0.256 $0.231 $0.218 $0.212 $0.199	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 5 150C BLK TPA-Locking Plate 1971777-5 TE Connectivity / AMP 1: $0.449 2,744In Stock	Mfr. Part No. 1971777-5 Mouser Part No 571-1971777-5	TE Connectivity / AMP	Headers & Wire Housings 1 X 5 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	2,744In Stock	$0.449 $0.377 $0.337 $0.306 View $0.269 $0.23 $0.228 $0.219 $0.212	Min.: 1 Mult.: 1
Headers & Wire Housings 14 Awg Tab contact 1971782-2 TE Connectivity / AMP 4,000: $0.094 20,000In Stock	Mfr. Part No. 1971782-2 Mouser Part No 571-1971782-2	TE Connectivity / AMP	Headers & Wire Housings 14 Awg Tab contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	20,000In Stock	Reel $0.094 $0.091	Min.: 4,000 Mult.: 4,000 : 4,000
Headers & Wire Housings 16 20 Awg Tab contact 1971784-2 TE Connectivity / AMP 3,700: $0.079 14,800In Stock 29,600Expected 11/11/2026	Mfr. Part No. 1971784-2 Mouser Part No 571-1971784-2	TE Connectivity / AMP	Headers & Wire Housings 16 20 Awg Tab contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	14,800In Stock 29,600Expected 11/11/2026	Reel $0.079 $0.075 $0.072 $0.06 $0.056	Min.: 3,700 Mult.: 3,700 : 3,700
Headers & Wire Housings 22 Awg Receptacle contact 1971785-2 TE Connectivity / AMP 4,400: $0.094 8,800In Stock	Mfr. Part No. 1971785-2 Mouser Part No 571-1971785-2	TE Connectivity / AMP	Headers & Wire Housings 22 Awg Receptacle contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	8,800In Stock	Reel $0.094 $0.09	Min.: 4,400 Mult.: 4,400 : 4,400
Headers & Wire Housings 2X18 Awg Tab contact 1971788-2 TE Connectivity / AMP 1: $0.34 677In Stock	Mfr. Part No. 1971788-2 Mouser Part No 571-1971788-2	TE Connectivity / AMP	Headers & Wire Housings 2X18 Awg Tab contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	677In Stock	Cut Tape $0.34 $0.269 $0.222 $0.199 Reel $0.109 View $0.171 $0.117 $0.106 $0.103	Min.: 1 Mult.: 1 : 2,200

Power Triple Lock Connector System

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Power Triple Lock Connector System

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